Whatis the difference between the two metals??

I am looking at making traction bars and I wanted to know the characteristic differences between the two metals!

Thanks!

 

chromoly is stronger

 

how could ya tell them apart???

 

mild steel tends to rust alittle faster than chromoly

 

DOM Mild steel is a light gray color, chromoly is a dark brown color

chromoly-
http://www.mckeone.net/photos/cage/P9220001.JPG

mild-
http://www.jmfabrications.com/...4.jpg

If that helps any

 

<U>1020 Mild Steel, cold rolled</U>

Component Wt. %
C 0.17 - 0.23
Fe 99.08 - 99.53
Mn 0.3 - 0.6
P Max 0.04
S Max 0.05

Density - 0.284 lb/in^3

Brinnell Hardness - 121

Yield Tensile Strength - 50.8 ksi
Ultimate Tensile Strength - 60.9 ksi
Shear Modulus - 11600 ksi
Modulus of Elasticity - 29.7 ksi

<U>1212 Mild, cold drawn</U>

Component Wt. %
C Max 0.13
Fe 98.52 - 99.07
Mn 0.7 - 1
P 0.07 - 0.12
S 0.16 - 0.23

Density - 0.284 lb/in^3

Brinnell Hardness - 167

Yield Tensile Strength - 60.2 ksi
Ultimate Tensile Strength - 78.3 ksi
Shear Modulus - 11600 ksi
Modulus of Elasticity - 29.0 ksi

<U>4130 Chromium-Molybdenum, Normalized at 1600 F</U>

Component Wt. %
C 0.28 - 0.33
Cr 0.8 - 1.1
Fe 97.3 - 98.22
Mn 0.4 - 0.6
Mo 0.15 - 0.25
P Max 0.035
S Max 0.04
Si 0.15 - 0.35

Density - 0.284 lb/in^3

Brinnell Hardness - 197

Yield Tensile Strength - 63.1 ksi
Ultimate Tensile Strength - 97.2 ksi
Shear Modulus - 11600 ksi
Modulus of Elasticity - 29.7 ksi

<U>4130 Steel, water quenched 1570°F, 1000°F temper</U>

Component Wt. %
C 0.28 - 0.33
Cr 0.8 - 1.1
Fe 97.3 - 98.22
Mn 0.4 - 0.6
Mo 0.15 - 0.25
P Max 0.035
S Max 0.04
Si 0.15 - 0.35

Density - 0.284 lb/in^3

Brinnell Hardness - 302

Yield Tensile Strength - 142.0 ksi
Ultimate Tensile Strength - 151.0 ksi
Shear Modulus - 11600 ksi
Modulus of Elasticity - 29.7 ksi

<U>4140 Steel, normalized at 1600°F, air cooled</U>

Component Wt. %
C 0.38 - 0.43
Cr 0.8 - 1.1
Fe 96.785 - 97.84
Mn 0.7 - 1
Mo 0.15 - 0.25
P Max 0.035
S Max 0.04
Si 0.15 - 0.3

Density - 0.284 lb/in^3

Brinnell Hardness - 302

Yield Tensile Strength - 97.9 ksi
Ultimate Tensile Strength - 148.0 ksi
Shear Modulus - 11600 ksi
Modulus of Elasticity - 29.7 ksi

That's all you're getting, that took forever....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Goullish &raquo;</TD></TR><TR><TD CLASS="quote"><U>[B]...

That's all you're getting, that took forever....</TD></TR></TABLE>

You should've just sent him to http://www.matweb.com.

 

it has been answered.